23. Rey Mysterio: $8.5 million net worth
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The man who is often credited for helping make Lucha Libre style wrestling a massive hit in the United States in the 1990s has been at it for decades. Rey Mysterio started out in Triple A before getting noticed in Extreme Championship Wrestling. World Championship Wrestling then came calling in 1996, and feuds with the likes of Dean Malenko, Psicosis and Ultimo Dragon helped make Rey Jr. a star. His best runs of his singles career came in the WWE, where he won the World Heavyweight Championship and the WWE Championship. Mysterio and the WWE parted ways earlier this year, but he is still working for several promotions.